Sunday, December 14, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, DECEMBER 14, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
UNUSUALLY QUIET AND SEASONABLE WEATHER FOR MID DECEMBER
AS TEMPERATURES SLOWLY RISE ABOVE NORMAL
Temperatures near the seasonal normals with variable
amounts of cloudiness but no precipitation as weather
pattern goes dry after big storm of December 10-11.
Still no important snowfalls this month.
Temperatures have begun a slow rise to above normal
running at +2 degrees on Saturday and with a minimum
of 28F being +4 for December 14. Afternoon highs were
reaching the low 40’s for a second day.
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, broken altocumulus,
clouds decreasing
Temperature: 29F; Dew Point: 25F; Wind: NW at 10 kts
Sea-level pressure: 29.82 ins. Hg, rising then more quickly
Visibility: 45 miles, light distant haze
6-hr max temp: 30F
6-hr min temp: 28F
24-hr precip: 0.00
24-hr snowfall: none
BHO SA 1155 37 SCT E75 BKN 45 098/29/25/3210/982/ CLDS DCRSNG
LGT DSNT HZ/ 8/530 53011 10030 20028
10 A.M.
Weather: Broken altocumulus
Temperature: 33F; Dew Point: 26F; Wind: NW at 12 kts
Sea-level pressure: 29.85 ins. Hg, rising slightly
Visibility: 45 miles, light distant haze
BHO SA 1455 E75 BKN 45 107/33/26/3112/985/ LGT DSNT HZ/
8/030 53009
1 P.M.
Weather: Clear, few cumulus/stratocumulus offshore distant E,
and distant WNW-NW, altocumulus and altocumulus lenticularis
mostly distant NNW-E-SSW, small patch cirrus distant NW
Temperature: 42F; Dew Point: 29F; Wind: NW at 11 kts,
Sea-level pressure: 29.81 ins. Hg, falling then more slowly
Visibility: 55 miles, light distant haze
6-hr max temp: 42F
6-hr min temp: 29F
BHO SA 1755 CLR 55 094/42/29/3111/981/ FEW CU/SC DSNT E OFFSHR
AND DSNT WNW-NW AC/ACSL MSTLY DSNT NNW-E-SSW SML PTCH CI DSNT NW
LGT DSNT HZ/ 8/841 56013 10042 20029
SUMMARY FOR SATURDAY, DECEMBER 13, 2014
TEMPERATURE (DEGREES F)
MAX…..40 NORMAL…..40
MIN…..27 NORMAL…..25
MEAN….34 NORMAL…..32
DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH…………………….+9 [+0.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..31 DEPARTURE………..-2
TOTAL HEATING UNITS FOR THE MONTH………….389 DEPARTURE………..-9
TOTAL HEATING UNITS FOR THE SEASON………..1548 DEPARTURE………-112
TOTAL HEATING UNITS LAST SEASON TO DATE……1647 DIFFERENCE………-99
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………28 NW AT 6:28 P.M.
ASOS…………………..29 NW AT 6:29 P.M.
DAVIS………………….26 NW AT 3:55 P.M. RMY 28
FASTEST MILE FOR YESTERDAY………………..21 NW AT 6:30 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..21 NW AT 6:30 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 NW AT 6:30 P.M.
AVERAGE WIND SPEED AND DIRECTION…………12.4 NW
ASOS…………………12.3
DAVIS………………..10.6 NW [310 degrees)
* Last of several occurrences…[
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE…..-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….5.40 DEPARTURE…..+3.26
ASOS…………..5.54
TOTAL PRECIPITATION FOR THE YEAR……….53.16 DEPARTURE…..+2.49
ASOS………….53.73
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..,,0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH…………….0.6 DEPARTURE……-3.9
TOTAL SNOWFALL FOR THE SEASON……………9.3 DEPARTURE……+2.2
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
12/1 63/37/50/+13/0.01/0.0/…/.. 28 WNW RMY 31
12/2 37/30/34/-2/0.10/T/000/00 26 E RMY 29
12/3 49/34/42/+6/0.31/0.0/000/00 40 W RMY 43
12/4 41/27/34/-1/…./0.0/…/.. 29 WNW RMY N/A
12/5 42/23/33/-2/…./0.0/…/.. 21 E RMY 22
12/6 43/36/40/+5/…./0.0/000/00 25 NNW RMY N/A
12/7 36/18/27/-7/…./0.0/…/.. 31 N RMY 34
12/8 25/16/21/-13/0.01/0.1/000/00 24 N RMY N/A
12/9 48/25/37/+3/3.23/0.0/000/00 48 ENE RMY 52
12/10 47/35/41/+8/0.43/0.0/000/00 35 NNE RMY 37
12/11 35/29/32/-1/0.05/0.5/000/00 27 SW RMY 27
12/12 36/26/31/-2/0.00/0.0/…/.. 23 WNW RMY 25
12/13 40/27/34/+2/0.00/0.0/…/.. 28 NW RMY 28
morning low temp: 28F since midnight; the normal low is now 24F
* 8TH–A tenth of an inch of snow estimated
DAILY RECORDS FOR DECEMBER 2014:
-DAILY PRECIPITATION RECORD FOR DECEMBER 9 2014
Old record of 1.51 inches set in 1952,
replaced with new record of 3.23 inches.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR DECEMBER 14
HIGH 62 IN 1901
LOW -6 IN 1893
PRECIP 1.94 INS. IN 2002
SNOWFALL 8.0 INS. IN 1907
PEAK GUST 78e ENE IN 1941
RECORDS FOR DECEMBER 15
HIGH 64 IN 1975
LOW 4 IN 1900, 1905, 1933
PRE 1.80 INS. IN 1981
SNOW 7.5 INS. IN 1951
PEAK GUST 65 MPH NW IN 1991
TODAY’S REPORT PREPARED BY: Robert Skilling
